Mechanism for making tubes from billets.



' No. 628,024. r

.1. H. NICHOLSON.

MECHANISM FOR MAKING TUBES FROM BILLETS.

Patented July 4, I899.

I (Application filed July 18, 1898.) (No Model.)

INVENTOR WITNESSES:

dug-tubes of the operation of which a solid metallic ingot, bil- U NlTED STATES Jenn n. NICHOLSON. or CLEVELAND, OHIO.

' MECHANISM FOR MAKING TUBES FROM BILL-BIS,

SPECIFICATION forming part of Letters Patent No. 628,024, dated, July 4, 1899. Application filed July 18,1898. Berialllm 686,279. No model-l To alt whom it uncut-unearne- State of Ohio, have invented a certain new and useful Improvement in Mechanism for Making Tubes from'Billets, of which im provement the following is a specification.

Myinventiou relates to mechanism for makgeneral class or type in the let, or blank is passed between the faces of rotating rolls or disks, from which it receives both a rotary and a and by the action of which it is reduced in diameter and converted into a tube by being forced over a piercing-mandrelin the axial line of the traverse of the ingot, billet,'or

blank.

The object of my invention is to enable a more powerful endwise motion or feed to he imparted to a billet than has heretofore been practicable and to be so imparted asto tend to obviate'the slip on the billet due to the resistance oi the piercing-mandrel, said slip as occurring in machines of the class to which my invention relates being objectionable by reason of its tendency to injure thelmetal.

My invention is also designed to simplify and perfect the construction and operation of mechanism of this class by obviating the neeessity heretofore existing for the employment of diflierent sizes of guides for maintainin g the billet in a horizontal plane equally distant from the centers of the rolls .or disks and enabling a single guide to be used in operating-on all billets within the capacity of the machine.

To this end my invention, generally stated,

eonsistsin the combination of two rotary members the axes of which are inclined-in opposite directions relatively to each of two iongitndinal planes which intersect, at right angles one to the other, the axial line of traverse of a billet between the rotary members and which-are also inclined in the samedirection relatively to one of said 'planes, but out of line one with the other, so as when pro duced to intersect said plane on opposite sides of the axial line ofthe billet or pass, whereby contact of one rotary member with v wholly above or-on one sidethe line of the billet will be of the axis thereof and the line of contact of longitudinalmovement So far as my the other rotary member with the billet will be wholly below or on the other side of the. axis thereof. I

The improvement claimed is hereinafter fully set forth The general and characteristic features of machines formaking tubes from ingots, billets, or blanks by piercing them while heatedand rolling or forcing them into tubular form are well known to those skilled in the art and may be briefly stated as" consisting-of two or more opposed or overlapping rolls or disks the faces of which are so shaped'as to provide a contracting passoropening between them through which the heated billet is advanced by the rolls over an opposing piercing-maudrel, the billet being rapidly rotated and its diameter-reduced bytheaction of the-rolls coincidentl y with its longitudinal advance or feed. The required rotary and endwise motion has been imparted to the billet by'rolls or disks disposed 'in one or another of the three following ways-to wit, (a) having one 75 one or both of their axes intersecting the horizontal plane of thebillet or pass; (11) having both their axes in a plane on one side of the horizontahplane of the'billet or pass, and (,c)

having their axes in planes on opposite sides 89 of thehorizoutal plane of the billet or pass. In each of thesev dispositions of the rolls or diskstheline of contact with the billet is substantially in the horizontal plane of the axis thereof. The billet is advanced and forced down upon and over the piercing-mandrel, against which it abuts, on and around its axial line and around and along whichpasses the produced cylindrical body-of metal which forms the. tube. 9o

knowledge andinformation" extend, notube-making machineof the glass to which myeinvention relates whichhas been proposed or put in-practice-prior to my in? ventien has been provided with a roll or-disk 5 which clients the feed of the billet by reason of being disposed in more than one of the three ways which are above specified.

' Under my present invention the center 0t one of therotarymembersis raised above and re length of line of contact with the billet wholly j other has its entire length of line of contact with the billet wholly on the opposite side of ing and lowering of the centers of the rotary trate. only so much of a mechanism for male partly in section; Fig. 2, anend view as seen 15 I well known to those skilled inthe art and'not invention are not illustrated. I the rotary members A and B are each coned axis or axial line 2 of the billet or pass, the

- follows; Assuming two longitudinal planes 'members are'likewise so inclined as,; -when produced, to-intersect longitudinal planes as seen' from the left of Fig. 1.

be rotated in the directions indicatedbythe aradvanced longitudinally over the same in the tofore employed. a

on one side of 'saidho'ri'zontal plane andthe' saidhorizontal plane. The axesof the rotary passing at right angles one to the other through .the axis of the billet or pass. In such construct-iontlie endwiee movement or advance of, the billet is'due both to the raismembers above] and below the horizontal plane passing through the axis of the billet or pass and to the inclination of the axes of the rotary members-'tothat of the billet or ss iniheliorizonta'l plane, which brings the fries of contact of the rotary members with the billet wholly on opposite sides of the horizontalplane.

In the accompanylngdrawings, which illus ing tubes as is suflicient to exemplify myinvention, Figure 1 isa plan'view with the billet from the top of Fig. 1, and Fig. 3 a side view In the practice of-my invention provide two rotary members A and B, which are in the form of rolls or disks and are secured, respectively, upon shafts a and b, which are mounted in suitable bearings and adapted to rowsf by power-transmission connections toa prime mover; The means folmounting and rotating'theshafts aand b are such as are forming in and of themselves any part of my The faces of in the usual manner, so as to form a eontract-v 'ing pass for the longitudinal traverse between them of the billet C from'which QlillbG is to be produced; A piercing-mandrel D, which has a conical head and may be-either fixed or rotated, is supported in-the axial line of the pass or billet, and the billet'is rapidly rotated, forced down upon the piercingmandrel, and

production of the tube by the action 'of the rotary members A and B upon it in the same general manneras in the mechanisms here- The essential and characteristic feature of my invention consists in the angular disposition of the axes so and y of the rotary'members A and B, respectively, relatively to the governing rules of suchdisposition being as atright angles one to the other (as a vertical and a horizontal one) to intersect the axial line z of the billet or pass and that said axial line be in a horizontal plane, as is the-usual and most convenient practice, the axes wand y of the rotary members are inclined to the vertical plane in opposite directions and at such angles as, in connection with the form from said plane.

OBS OPQ oi the faces of the rotary members A and B, will provide a pass of the desired-horizontal Section between them, as indicated in Fig. 1. The axes a: and y are also each inclined in two directions to the horizontal plane-that isto say, viewed in a vertical plane transverse to the axial line'z of the billet or pass, as indicated in Fig. 2, the axes x'and got the rotary members are each inclined irl'the same direction and either at the same or at differ-- ent angles, as preferred, to the horizontal plane, but are not in the same plane or in line one with the other, so. that one of said axes (as the axis :0) when produced intersects the vertical longitudinal plane passing through the axial line z of thebillet or pass.

above said axial line, and the other of said axes (as the axis 1 when produced intersects said vertical longitudinal plane below said axial line. When viewed in a longitudinal plane, as indicated in Fig. 3, the axes a: and

y of the rotary members are inclined in opposite directions to the horizontal plane, one ofsaid axes (as the axism) being downwardly inclined from said planeand the other of said axes (as the axis y) being upwardly inclined This compound inclination ofthe axes a: andj'y might be stated in other words as beingan inclination in the same direction to a vertical plane .with the axes out of line, Fig. 2, and an inclination in opposite directions to a horizontal plane, Fig. 3.

From the'aibove-described relation of the axes of the rotary members A'andB to that of the pass or billet it follows that the line of contact of one of saidmembers (as the the member A) with the billet, one end oi. which line is imdicated at win Fig: 2, will be wholly above the horizontal plane, and the line of contact of the other member (as. the

member B) with the billet, one end of which line is indicated at v in Fig. 2, will be wholly below the horizontal plane. The lines of contact of the rotary members with tile billet are therefore on opposite sides of each of two planes-a horizontal and a vertical one-intersecting in the axial. lineof the billet or ass. The application of my invention enables a more powerfnl'action of the rotary members to be exerted in effecting the longitudinal advance or feed of the billet, which is highly desirable and advantageous in'the operation of tube-making machines of the classto which my invention relates, and also provides a ma- "chine of such construction as promotes its of them may impart to it an equal amount of feed for a given equal angular rotation.

, Under my invention two agencies coact in effecting vthe feed of theibillet-to wit, the

raising and lowering Offlth centers'of the 120- taryini'em-bers above and-below the horizontal' plane of the pass respectively and the inclination of the-axesto the vertical plane of y 7 It is-therefore unnecessary to. keep :the ibillet in 'ahorizontal plane equally dis tantj from the iz enters' of the rotary members,

as the horizontal fplaneofi the pass can be raised or. lowered without interfering with th'efeed, the necessaryamount of whichgfforr \anydetermined angular rotation beingpr'onducedfby theincl'ination of the axes of the 1 rotarymembers after t-he horizontal plane of the pass. midway between the centers of the Zrotaryirnembershas been departed from.

The provisioniof a-plnrality of top and bet- 7 tom guides ofditIere'nt-sizes which have been heretoforen'ecessary for holding billets of dif-' v. fer ent 'sizes in the normalaxial line ofthe pass-isfjobviated by the employment of my in:

'vention,-i n thepractice 'whicha single guide'will snflice forall, sizes of billets which arewithin the capacity of the machine'. The

top member of the guide may also bedispensed with by givinga greaterinclination to the axis of one rotary member than to the other; It will be seen that my invention is of decided advantage in operating-upon billets of different sizes in avoiding the necessity of the dififerents zed guides which have been heretofore rea billet between the rotary members, and

which have their centers loeated,respectively,

above and below one of said longitudinal planes,'so that their lines of contact with the billetshall be wholly on opposite sides of said plane.

2. In mechanism for making tubesfrom bilso lets, the combination of a piercing-mandrel, and two rotarymembers fixed upon shafts which are adapted to rotate on opposite sides of the axial line of. said mandrel, the axes ofsaid members being, (a) oppositely inclined to a longitudinal vertical plane passing through said axial line, and themselves intersecting said plane when produced, (b) upwardly and downwardly inclin ed,-respectively, to a horizontal plane passing through said axial line,

and themselves intersecting said plane, and

- .(c) inclined in the same direction, out of line one'with the other,-to said horizontal plane, and with the centersof the rotary members located, respectively, above and below said plane.

' 3. In mechanism for making tubes from billets, the combination of two rotary members, the axes of which are inclined relatively to planes intersecting the axial line of an intermediate pass or space for the traverse of a billet, in three different directions, to wit; oppositely to said axial line, as seen in plan,

- upwardly and downwardly relativelyto shorizontal-plane through said axial line,.as seen .75 in side eleyation, and in the same direction but out of line one with the other, as-seen in end view, and so disposed that the lines of contact of therotary members, with a billet traversing in said axial line, shall be wholly on opposite-sides of each of two planes intersecting in said axial line. r

J. H. NICHOLSON.

\Vitnesses J. Snowman BELL, CHAUNCEY Losmernn. 

